@book{12160,
	author = {Sprague, G. F. and Larson, William E.,},
	title = {Corn production},
	publisher = {Agricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.,},
	year = {1966]},
	series = {United States. Dept. of Agriculture. Agriculture handbook ;},
	address = {Washington]}
}